Draft-bar.



W. F. DUNN.

DRAFT BAR.

APPucAUoN mso Nov.2|. 191s.

Patented Sept. 4, 1917.

UNITED sTATEs PATENT oEErcE.

WILLIAM F. DUNN, OF TALENT, OREGON, ASSIGNOR OFONETHIRD TO FRANCIS G. SWEDENBURG, 0F ASHLAND, OREGON, AND ONE-THIRD TO JOE M. KERBY, OF

TALENT, OREGON.

DRAFT-BAR.

Specification of Letters Patent. l

Application led November 21, 1916. SeralNo. 132,587.

State of Oregon, have invented a new and Improved Draft-Bar, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved draft bar more especially designed for use on harrows and other agricultural machines and devices, and arranged for being connected with a single team or as an evener for two teams employed for dragging the harrow over the field.

In order to accomplish the desired result. use is made of a tubular metal bar, two sets of rings of considerably larger diameter than the said bar and through which the bar loosely passes, means for pivotally securing the sets of rings on the bar, one of thesets of rings being secured at the front and the other at the rear of the bar whereby one set will project forwardly and the other rearwardly, hooks carried by one set of rings, converging links pivotally connected at one end with the other set of rings, and a ring connecting the other ends of the links with each other. Use is also made of a coupling device of special construction for connecting two bars with each other for use on harrows of any number of sections.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a plan view of the draft bar arranged as a four-horse evener;

Fig. 2 is a similar view of the same arranged for a single team;

Fig. 3 is an enlarged sectional side elevai tion of the draft bar on the line 3-3 of pivotally on the staples 12 and 14, the said l rings being of considerably greater diameter than the bar 10, which latter passes loosely through the said rings. The rings 15, 16, 17 and 18 are engaged by hooks 19, 20, 21 and 22 adapted to hook onto theeyes or goosenecks 25 of the sections of a. harrow 26, as plainly indicated in Fig. 2. When it is desired to use the draft bar as a four-'horse evener then the hooks 19 and 20 are conconnected with each other at their outer ends by a ring 40. By the arrangement described whiiietrees or other draft devices can be' ratenteasept.4,1917. j

connected with the rings 34 and 4() for pull ing the harrow over the ground by means of teams or by power. A staple 41 is attached to the draft bar 10 approximately midway between the staples 11 and 13, and a similar staple 42 is attached to the bar 10 approximately midway between the staples 12 and 14. The staples 41 and 42 are engaged by rings 43 and 44 of greater diameter than the -bar 10 so that the latter passes through the said rings, but the staples 41 and 42 are so arranged relative t0 the staples 11, 12, 13 and 14 that the rings 43, 44 project in an opposite direction to that of the rings 15, 16, 17 and 18. The rings 43 and 44 are connected with the ends of convergin links 45, 46 connected with each other at t eir outer ends by a ring 47 adapted to be hooked onto an eye or gooseneck 48 of a harrow 49 or other agricultural machine or device, in case the draft bar is used as a four-horse evener, as shown in Fig. 1. 1n case the draft bar 10 is used as shown in Fig. 2, then the ring 47 is connected with whilfletrees or other draft devices for pulling the harrow over the field by means of teams or by power.

Each of the staples 11, 12, 13, 14, 41 or 42 is preferably constructed as shown in Fig. 5, and is made of a piece of wire bent into staple form to provide an eye 50 for engagement with the corresponding ring 15, 16, 17, 18, 43 or 44. One shank 51 of the staple eX- tends through one side of the tubular bar 10 to abut against the opposite sides thereof at the inside of the bar, and the other shank 52 of the staple extends diametrically through the bar and its terminal 53 is bent over and threaded adjacent ends of the draft bars l0, as plainly indicated in Fig. 4L. In each of the caps 60 is mounted to turn a threaded shank 6l of a hook 62 and on the threaded shank 61 screws a nut 63 extending within the corresponding bar l0. The hooks 62 on the caps 60 of the adjacent ends of bars 10 are hooked one into the other so as to connect the two bars together', at the same time, however, allowing the bars to turn individually owing to the free turning of the shank 6l of the hook 62 in the cap 60.

The draft bar shown and described is very simple, durable and light in construction j and it can be readily coupled with the har- 0 row sections or with whifiietrees or like devices used for drawing a harrow over the ground, and when the parts are used as illustrated in Fig. l then a four-horse evener is provided owing to the peculiar arrangement of the converging links and their connection with the bar at the points above described.

I-Iaving thus described my invention, I claim as new and desire to secure by Letters Patent l. A draft bar, comprising a plurality of tubular metal bars having adjacent ends provided with screw threads, caps screwing on the said threaded ends, hooks on the said caps and hooking one in the other, connecting means held on the said bars and adapted for connection with sections of a harrow, and means held on the said bars and adapted to be connected with the draft devices.

2. A draft bar, comprising a plurality of tubular metal bars having adjacent ends provided with screw threads, caps screwing on the said threaded ends, hooks having threaded Shanks mounted to turnin the said caps, nuts screwing on the said shanks within the said caps, connecting means held on the said bars and adapted to be connected with sections of a harrow, and attaching means on the said bars and adapted to be connected with draft devices.

I/VILLIAM F. DUNN.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

